cell biology.txt

  1. membrane phospolipid arrage themeselves w/ the hydrophillic ends towards the -- of the membrane and the hydrophobic ends towards the --- of the membrane




    B. surface/center
  2. A protein that adheres to the intracellular face of the plasma membrane is called an

    A) peripheral protein.
    B) integral protein.
    C) transmembrane protein.
    D) None of the above.
    a. preipheral protein
  3. Membrane proteins that aid in
    communications from other cells are





    C. receptors
  4. ----increase a cell's external surface area and are found on intestinal cells.





    B. microvilli
  5. When blood pressure in capillaries forces water and dissolved solutes out into the tissue fluid, this is called
    a. filitration
    b. diffusion
    c. osmosis
    d. osmotic pressure
    a. filitration
  6. The hydrostatic pressure required to stop osmosis is known as



    C. osmotic pressure
  7. Blood cells in a hypotonic solution will



    A. burst(hemolysis)
  8. The Na+ K+ pump is associated with



    D. all of the above
  9. Where the extracellular fluid is more highly concentrated than the intracellular fluid, we may say it is




    E. hypertonic
  10. By what method can the intestinal cells absorb sodium ions if they are in higher concentration inside the cell?
    a. active transport
    b. osmosis
    c. diffusion
    c. facilitated diffusion
    d. filtration
    active transport
  11. Which of the following organelles can be compared to a power-house because it supplies the cell with energy?



    A. mitochondria
  12. The nucleus of the cell



    D. all of the above
  13. Endoplasmic reticulum can be smooth or rough. The rough endoplasmic reticulum is different from the smooth because it has _____ embedded in it.
    A) ribosomes
    B) lysosomes
    C) peroxisomes
    D) chromatin
    a. ribosomes
  14. Which structure increases cell surface area?
    A) microtubules
    B) microfilaments
    C) microvilli
    D) inclusions
    c. microvilli
  15. The glycolipids and glycoproteins function to
    A) increase cell surface area.
    B) provide structural support to the cell.
    C) confer each cell's unique identity or fingerprint.
    D) increase membrane fluidity.
    c. confer each cell's unique identity or fingerprint
  16. Which of the following structures is most closely related to moving particulate matter along the surface of epithelium?
    A) flagella
    B) cilia
    C) microvilli
    D) brush border
    b. cilia
  17. Which tonicity describes a solution that has a lower concentration of nonpermeating solutes than the intracellular fluid?



    A)
    hypertonic



    B)
    hypotonic



    C)
    isotonic



    D)
    heterotonic
    hypotonic
Author
Anonymous
ID
101293
Card Set
cell biology.txt
Description
cell biology
Updated